Speaking port



FIG. 1 is a front view of a door incorporating a speaking port showing our new design;

FIG. 2 is a front perspective view of the speaking port showing our new design;

FIG. 3 is a rear view thereof; and

FIG. 4 is a top view thereof.

The door is shown in broken lines in FIG. 1 for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a speaking port, as shown and described. 